/* =========================================================
   TKN MULTISERVICES — Feuille de style principale
   ========================================================= */

:root {
  --primary: #093e0f;       /* Vert profond - couleur primaire / CTA */
  --primary-dark: #062c0a;
  --primary-light: #145a1d;
  --secondary: #f7cc30;     /* Or / Jaune - titres, accents premium */
  --secondary-dark: #d9ac10;
  --bg-light: #ffffff;
  --bg-soft: #f7f8f5;
  --bg-gray: #f0f1ec;
  --text-dark: #1a1f1a;
  --text-muted: #5a635a;
  --white: #ffffff;
  --shadow-sm: 0 2px 10px rgba(9, 62, 15, 0.08);
  --shadow-md: 0 8px 30px rgba(9, 62, 15, 0.12);
  --shadow-lg: 0 20px 50px rgba(9, 62, 15, 0.18);
  --radius: 14px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: 'Poppins', 'Inter', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  color: var(--text-dark);
  background: var(--bg-light);
  line-height: 1.65;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { text-decoration: none; color: inherit; }

ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 90px 0; }

.section-tag {
  display: inline-block;
  color: var(--primary);
  background: rgba(9, 62, 15, 0.08);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 18px;
  line-height: 1.25;
}

.section-title span { color: var(--secondary-dark); }

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 680px;
  margin-bottom: 50px;
}

.section-header { text-align: center; }
.section-header .section-subtitle { margin-left: auto; margin-right: auto; }

/* =========================
   BOUTONS
========================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(9, 62, 15, 0.28);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--primary-dark);
  box-shadow: 0 8px 26px rgba(247, 204, 48, 0.35);
}
.btn-secondary:hover {
  background: var(--secondary-dark);
  transform: translateY(-3px);
}

.btn-outline {
  background: transparent;
  border-color: var(--white);
  color: var(--white);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
}

.btn-outline-dark {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline-dark:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-block { width: 100%; justify-content: center; }

/* =========================
   HEADER / NAVIGATION
========================= */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 18px rgba(0,0,0,0.06);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  max-width: 1280px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand img {
  width: 100px;
  height: 100px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-text strong {
  font-size: 1.15rem;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: 0.5px;
}
.brand-text span {
  font-size: 0.72rem;
  color: var(--secondary-dark);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav > ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav > ul > li {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 18px;
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--text-dark);
  border-radius: 8px;
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--primary); background: rgba(9,62,15,0.06); }
.nav-link i.fa-chevron-down { font-size: 0.65rem; transition: transform 0.25s; }

.has-mega:hover .nav-link i.fa-chevron-down { transform: rotate(180deg); }

/* Mega Menu */
.mega-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: 640px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  border-top: 4px solid var(--secondary);
}

.has-mega:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-item {
  padding: 16px 12px;
  border-radius: 10px;
  transition: var(--transition);
  text-align: center;
}
.mega-item:hover { background: var(--bg-soft); }

.mega-item .mega-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  font-size: 1.3rem;
  margin: 0 auto 12px;
}

.mega-item strong {
  display: block;
  color: var(--primary);
  font-size: 0.98rem;
  margin-bottom: 6px;
}
.mega-item p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.header-cta { display: flex; align-items: center; gap: 14px; }
.header-cta .btn { padding: 12px 26px; font-size: 0.92rem; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--primary);
  cursor: pointer;
}

/* =========================
   HERO / SLIDESHOW
========================= */
.hero {
  position: relative;
  height: 92vh;
  min-height: 620px;
  overflow: hidden;
  display: flex;
  align-items: center;
  color: var(--white);
}

.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.4s ease-in-out;
}
.hero-slide.active { opacity: 1; }

.hero-slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9,20,10,0.75) 0%, rgba(9,62,15,0.75) 55%, rgba(6,20,8,0.9) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  padding: 0 24px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(247, 204, 48, 0.16);
  border: 1px solid rgba(247, 204, 48, 0.5);
  color: var(--secondary);
  padding: 8px 20px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 26px;
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 22px;
  text-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.hero h1 span { color: var(--secondary); }

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 40px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-dots {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 10px;
}
.hero-dot {
  width: 40px;
  height: 4px;
  background: rgba(255,255,255,0.35);
  border-radius: 4px;
  cursor: pointer;
  overflow: hidden;
  position: relative;
}
.hero-dot.active { background: rgba(255,255,255,0.5); }
.hero-dot.active::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--secondary);
  animation: dotFill 5s linear forwards;
}
@keyframes dotFill { from { width: 0; } to { width: 100%; } }

.hero-scroll {
  position: absolute;
  bottom: 30px;
  right: 40px;
  z-index: 3;
  color: rgba(255,255,255,0.75);
  writing-mode: vertical-rl;
  font-size: 0.78rem;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
}
.hero-scroll::after {
  content: '';
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.5);
}

/* =========================
   BREADCRUMB / PAGE HEADER (pages internes)
========================= */
.page-hero {
  position: relative;
  padding: 150px 0 80px;
  text-align: center;
  color: var(--white);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(247,204,48,0.18), transparent 55%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(2rem, 4vw, 2.9rem); font-weight: 800; margin-bottom: 16px; }
.page-hero h1 span { color: var(--secondary); }
.page-hero p { color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 22px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.7);
}
.breadcrumb a:hover { color: var(--secondary); }

/* =========================
   DOMAINES (Home cards)
========================= */
.domains-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.domain-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  height: 460px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.domain-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }

.domain-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.domain-card:hover img { transform: scale(1.08); }

.domain-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9,62,15,0.05) 0%, rgba(6,20,8,0.92) 78%);
}

.domain-card .card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 28px;
  color: var(--white);
  z-index: 2;
}

.domain-card .card-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: 2px;
  margin-bottom: 10px;
  display: block;
}

.domain-card .icon-badge {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--secondary);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
}

.domain-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 10px; }
.domain-card p {
  color: rgba(255,255,255,0.85);
  font-size: 0.92rem;
  margin-bottom: 18px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: var(--transition);
}
.domain-card:hover p { max-height: 100px; opacity: 1; }

.domain-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--secondary);
  font-size: 0.9rem;
}
.domain-card .card-link i { transition: transform 0.3s; }
.domain-card:hover .card-link i { transform: translateX(6px); }

/* =========================
   POURQUOI NOUS CHOISIR
========================= */
.why-section { background: var(--bg-soft); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.why-card {
  background: var(--white);
  padding: 38px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border-bottom: 4px solid transparent;
}
.why-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--secondary);
}

.why-card .why-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: rgba(9, 62, 15, 0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 22px;
}

.why-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.why-card p { color: var(--text-muted); font-size: 0.92rem; }

/* =========================
   STATS BAND
========================= */
.stats-band {
  background: var(--primary);
  padding: 50px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat-item h3 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 6px;
}
.stat-item p { color: rgba(255,255,255,0.85); font-size: 0.92rem; font-weight: 500; }

/* =========================
   CTA BAND
========================= */
.cta-band {
  background: linear-gradient(120deg, var(--primary-dark), var(--primary));
  color: var(--white);
  border-radius: var(--radius);
  padding: 60px 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 90% 10%, rgba(247,204,48,0.25), transparent 60%);
}
.cta-band-content { position: relative; z-index: 2; max-width: 600px; }
.cta-band h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); font-weight: 700; margin-bottom: 12px; }
.cta-band h2 span { color: var(--secondary); }
.cta-band p { color: rgba(255,255,255,0.85); }
.cta-band-actions { position: relative; z-index: 2; display: flex; gap: 16px; flex-wrap: wrap; }

/* =========================
   DOMAINES - PAGE DETAIL
========================= */
.expertise-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--bg-gray);
}
.expertise-block:last-of-type { border-bottom: none; }
.expertise-block.reverse .expertise-media { order: 2; }
.expertise-block.reverse .expertise-text { order: 1; }

.expertise-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.expertise-media img { width: 100%; height: 460px; object-fit: cover; }
.expertise-media .media-tag {
  position: absolute;
  top: 24px;
  left: 24px;
  background: var(--secondary);
  color: var(--primary-dark);
  padding: 8px 20px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}

.expertise-text .icon-badge-lg {
  width: 68px;
  height: 68px;
  border-radius: 18px;
  background: rgba(9,62,15,0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  margin-bottom: 24px;
}

.expertise-text h2 { font-size: clamp(1.6rem, 2.8vw, 2.2rem); color: var(--primary); font-weight: 700; margin-bottom: 18px; }
.expertise-text > p { color: var(--text-muted); margin-bottom: 26px; }

.feature-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 30px; }
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-dark);
  font-size: 0.96rem;
}
.feature-list li i {
  color: var(--primary);
  background: rgba(9,62,15,0.1);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* =========================
   FOOTER
========================= */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  padding-top: 70px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-brand img {
  width: 130px;
  height: 130px;
  object-fit: contain;
  margin-bottom: 18px;
  background: var(--white);
  border-radius: 20px;
  padding: 10px;
}

.footer-brand p { font-size: 0.92rem; line-height: 1.7; color: rgba(255,255,255,0.7); margin-bottom: 20px; }

.social-links { display: flex; gap: 10px; }
.social-links a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.social-links a:hover { background: var(--secondary); color: var(--primary-dark); }

.footer-col h4 {
  color: var(--secondary);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 22px;
  position: relative;
}

.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col ul li a {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.75);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.92rem;
  margin-bottom: 16px;
  color: rgba(255,255,255,0.8);
}
.footer-contact li i { color: var(--secondary); margin-top: 3px; }

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
}
.footer-bottom a:hover { color: var(--secondary); }

/* =========================
   CONTACT PAGE
========================= */
.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.3fr;
  gap: 50px;
  align-items: flex-start;
}

.contact-info-card {
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius);
  padding: 45px 36px;
  box-shadow: var(--shadow-md);
}
.contact-info-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 14px; }
.contact-info-card > p { color: rgba(255,255,255,0.85); margin-bottom: 34px; font-size: 0.95rem; }

.info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 26px;
  align-items: flex-start;
}
.info-item .info-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(247,204,48,0.18);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.info-item strong { display: block; margin-bottom: 4px; font-size: 0.95rem; }
.info-item span, .info-item a { color: rgba(255,255,255,0.8); font-size: 0.9rem; }

.contact-form-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 45px 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--bg-gray);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group { margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-weight: 600; font-size: 0.9rem; color: var(--text-dark); }
.form-group label .required { color: #d94848; }

.form-group input,
.form-group select,
.form-group textarea {
  padding: 14px 16px;
  border: 1.5px solid #e2e5df;
  border-radius: 10px;
  font-family: var(--font-main);
  font-size: 0.95rem;
  color: var(--text-dark);
  background: var(--bg-soft);
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(9,62,15,0.08);
}

.form-group select { cursor: pointer; }
.form-group textarea { resize: vertical; min-height: 130px; }

.form-consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.form-consent input { margin-top: 3px; }

.form-feedback {
  display: none;
  padding: 16px 20px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 0.92rem;
  font-weight: 500;
}
.form-feedback.success { display: block; background: rgba(9,62,15,0.1); color: var(--primary); border: 1px solid rgba(9,62,15,0.25); }
.form-feedback.error { display: block; background: rgba(217,72,72,0.1); color: #b33333; border: 1px solid rgba(217,72,72,0.25); }

/* Map */
.map-wrap { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); margin-top: 60px; }
.map-wrap iframe { width: 100%; height: 380px; border: 0; display: block; }

/* FAQ */
.faq-item {
  background: var(--white);
  border: 1px solid var(--bg-gray);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-question {
  padding: 20px 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  color: var(--primary);
}
.faq-question i { transition: transform 0.3s; color: var(--secondary-dark); }
.faq-item.open .faq-question i { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 26px;
}
.faq-item.open .faq-answer { max-height: 240px; padding: 0 26px 22px; }
.faq-answer p { color: var(--text-muted); font-size: 0.92rem; }

/* =========================
   BACK TO TOP
========================= */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 999;
  border: none;
  font-size: 1.1rem;
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--secondary); color: var(--primary-dark); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* WhatsApp floating button */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  left: 30px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 8px 24px rgba(37,211,102,0.4);
  z-index: 999;
  transition: var(--transition);
}
.whatsapp-float:hover { transform: scale(1.1); }

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 1024px) {
  .domains-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .expertise-block { grid-template-columns: 1fr; gap: 36px; padding: 50px 0; }
  .expertise-block.reverse .expertise-media { order: 1; }
  .expertise-block.reverse .expertise-text { order: 2; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .main-nav { position: fixed; top: 0; right: -100%; width: 320px; max-width: 88%; height: 100vh; background: var(--white); flex-direction: column; align-items: stretch; padding: 100px 26px 26px; box-shadow: -10px 0 40px rgba(0,0,0,0.15); transition: right 0.35s ease; overflow-y: auto; }
  .main-nav.open { right: 0; }
  .main-nav > ul { flex-direction: column; align-items: stretch; gap: 2px; width: 100%; }
  .nav-link { padding: 16px 10px; justify-content: space-between; border-bottom: 1px solid var(--bg-gray); border-radius: 0; }
  .mega-menu { position: static; width: 100%; transform: none; opacity: 0; visibility: hidden; height: 0; grid-template-columns: 1fr; box-shadow: none; border-top: none; padding: 0; }
  .has-mega.mega-open .mega-menu { opacity: 1; visibility: visible; height: auto; padding: 6px 0 12px; }
  .has-mega.mega-open .nav-link i.fa-chevron-down { transform: rotate(180deg); }

  /* Alignement du sous-menu (mega menu) à gauche, aligné avec les liens principaux */
  .mega-item {
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    padding: 12px 10px;
    border-radius: 8px;
  }
  .mega-item .mega-icon {
    width: 42px;
    height: 42px;
    font-size: 1.05rem;
    margin: 0;
    flex-shrink: 0;
  }
  .mega-item strong { margin-bottom: 2px; }
  .mega-item p { display: none; }
  .header-cta .btn-outline-dark { display: none; }
  .nav-toggle { display: block; }
  .nav-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 998; }
  .nav-overlay.show { display: block; }
  section { padding: 60px 0; }
}

@media (max-width: 480px) {
  .header-cta .btn-text { display: none; }
  .header-cta .btn-primary { padding: 12px 14px; }
}

@media (max-width: 640px) {
  .brand img { width: 64px; height: 64px; }
  .brand-text strong { font-size: 0.95rem; }
  .brand-text span { font-size: 0.6rem; }
  .header-cta .btn { padding: 10px 18px; font-size: 0.85rem; }
  .hero { height: auto; min-height: 100vh; padding: 140px 0 80px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .why-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 30px 16px; }
  .cta-band { flex-direction: column; text-align: center; padding: 40px 26px; }
  .cta-band-actions { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; text-align: left; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form-card, .contact-info-card { padding: 30px 24px; }
  .expertise-media img { height: 300px; }
  .hero-scroll { display: none; }
}